ICP Programs API-577 Full Course Free

Good weldability.

Significant issues with lack of sidewall fusion.

Fewer problems with distortion.

A tendency toward lack of root pass fusion.

Neutralize and clean the surface within 6 in. (150 mm) of weld bevels

Steam out the piping system and dry

Verify with pH paper that any surface liquid is “basic"

Grind the surfaces near the bevel to remove contaminants

Deposition rates are lower than GMAW.

The process cannot be used in areas of limited access.

It has low tolerance for contaminants.

The process is sensitive to wind and draft.

A lighter density in the center of the width of the weld image, either extended along the weld or in isolated circular drops.

An irregular darker density near the center of the width of the weld image along the edge of the root pass image.

An abrupt density change across the width of the weld image with a straight longitudinal darker density line at the center of the width of the weld image along the edge of the density change.

A localized darker density with fuzzy edges in the center of the width of the weld image.